<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
        "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
    <meta content="text/html;charset=utf-8" http-equiv="content-type"/>
    <title>Hello CSS!</title>
    <style type="text/css">
        span {
            font-family: "Microsoft YaHei";
            font-size: 18px;
            color: #0033CC;
            background-color: yellowgreen;
            width: 300px;
            height: 100px;
            text-align: center;
            display: block;
            vertical-align: middle;
        }
    </style>
</head>
<body id="Body">
<span>CSS基础</span>
<span>CSS基础</span>
</body>
